Resuscitation apparatus



March 8, 1932.

R. B. swoPE ET Al.

RESUSCITATION APPARATUS Filed Aug. 1o. 192s f/z /f/ All Patented Mar. 8; 1932' UNITED RoBERT 1a.y sworn AND. JOSEPH KREISELMANOF WASHINGTou,` yDISTRICT'oa`v -v -f1 COLUMBIA f i RESUSCITATION APPARATUS l Application med August-1o, 1.928." sverialia 298,745,

Y The present invention relates to resuscitation apparatus" and particularly7 to devices vfor eiecti'ng the introduction of gas under' pressure into the lungs of a patient. y A

vIt is a priniaryconsideration in'artiicially iniiating the lungs of a patient, particularly",l

VThis casing is'provided with an inlet 11 corninunicating with a pipe'lQ throughjwhicli the resuscitation gas'y "is lsupplied "under 'a' conn paratively low pressure.

Y thelungs of newlyborn infants, tosupply the yoxygen lor 'other gas'y under pressures which aresufriciently low that all danger ot'ru`ptur4.y ing orotherwise injuring the Walls of the lung isavoided. Further than this however it is necessary to provide means for effecting the actual introduction ofthe gas under this low pressure into the, lungs since' obviouslylber 15ste vasytube 17 adapted'to beconn'ected 65. ivith a f pressure indicating device, preferably"V thislow pressure gaslwillnot pass down the throat of the'patient should the throat hap-V Y u 'i Thepresent invention provides means Where,-4

fthe expiration oi this gas by the natural con! traction ofthe Wallsv of the lung cavities may be permitted, both the introduction of the gas from the flungs being' Y Y Y under the convenient control of an operator. Y

to be fitted to the'head vof the patient, the ar rangement beino` suchthat theV last mentioned appliance niayie adj ustedV and maintained.y

in adjustment by the operator, who is grasping the control device, so that this operator may have 1nV one hand the complete mecha-L vnism for controlling the artificial inspiration 'and yexpiration of. the patient and hais his other hand free to'nianipulate pressure rein'its entirety.

veffective in operationthan others of this genf, eralltype which have heretofore been designed or suggested. f

' pen to be obstructed, as by the tongue.

' presentinvention andfisr therefore not illus- Vby intermittently and nproper vo1u1ne,-gasff,trated in the drav'ving.` f

.may be passed from asuitable source of sup-` plyV into the lungs ofia ypatient and whereby fintoy the lungsand theyexpiration thereof'` device for introducing and cont-rolling rer" suscitation gases according .to the present invention, and showing the face mask, airway,

Ifnanip'ulating valve,l and connections there-y mnL l,

' yThe device embodies essentially a A'casing 10:"

aunanometer,'which -forins no part' ofthe A second internal flange *18- is located'rbel'0 tween'the chamber 15 and an lairchamber 19',`

which is'provided with aseries fofairfvents '20. f'As thus described it will hel apparent that the casing 1() is ysubstantially hollow and its'oint'erio'r cavitycolnprisesthe three'fchain- 75 bers 14,15 andv 19, separated onlyby the 1in-V" K ternal flanges 13 and 18 respectively.-y n

` YThe .present invention contemplates a novel arrangement of ag'as inspiration and expiration control ineans and a device or appliancel The loWerend-.of the casing .lOfisthreaded ,"to receive anipple Q5. which afterbeling threaded intoposition is secured byalock 80 screw 26. The ni`ple'25 has afcentralborel Q'ivhichcommunicates with the facegniaslr Vindicatedgenerally at28. Y

Mounted-in theohainber 15 is a control Vvalve 30," which in Vtheforin shown is a sub- 85 v. Y. `^^l'll noia s ducing devices or other apphances'whichinay llphely of the member 30 S 1mb y e t ge Y he associated With the resuscitation apparatus.

the tlange l8r The -valv'e30-has arcentralsteinl 9 339er* smaller diameter thanl they passage VAlso i'n'its,v details the Present'invention"thyugh the flange 13 *and *which projects has a number of novel vfeatures which render j it more sanitaryY and more convenient and freely therethrough', and on through a central aperture 34 inthe yupper head 3501i' the casing 95 10. Y The 'stein 33`terminates-V in a cap 36, and afspring 37V concentiiclwviththe stem 33 `lies therebelov with itsflo'werf end received in an annulargroove 39V formed-in th'efhead` 35. 'lhc'spring normally holds the upper'sur- 10o The l 'casing l0v is 6o rface 31 of the valve 30 seated against the lower surfacer of the annular flange 13.

A portion 4() of the casing 1() is' extended upwardly and is bifurcated to pivotally receive a lever 41 mounted on a pivot ypin 42. This lever hasan overhanging rliglit angle flange 43 which normally holds the part-s in the position shown in the drawing. 'The l'ever il is v'provided with a 'cam zp'ortion 44 which engages the head 36 so as to opera'te the valve when the lever 41 is depressed.

The lower face of thc valve i3() is centrally bored forming an internal chamber 47, the upper portion of which is radially 'drilled to provide `a .plunality of bleed apertures 48 in communication with `the chamber 47. The

- Ka flange Y54 and bodily vlinedbyboilingforimmersion in a or antiseptic solution.

nipple is .provided with an internal up- Wsvrdl `proj ecting `boss for. .the .passage 27, and w ich forms a lower seatfor the valveBO.

The face mask 28 con'rprises a concave or shaped member preferably offsti'flv iexas comparatively thick rublber, or it may be ,provided with more rigid material, having a contact cushion 29 of very yieldable material and/adapted to marke substantially l the petient. e' Ifv y b elhol-low-adiulatable in order to `more completely sealthe mask to the face.

Asshownthe maskfis- )rovided with a ybase port-ion '52. Lsomewhat t 53 passes therethrough, with the hase 52 enr on the coupling. The router portaon of the couplingf is threaded -as 'at 55 to,v receive a flatnut 56, by means of wh-iohthe bese 52 is compressed against 'the #ange 54 to seal theparts against the xleakage ofzgas. The maskand coupling are connected zto the easing 10 by meansof yan internal bore 57 of the coupling :53,fwhich engages Van out- 'worly projecting sleeve 58 -integr-al with the 'nippleia #Any desiredquickly detachable comedien-may be used, but preferably the device is constructed as shownk so that Aa .firm friction contact Aholds the elements' together., and permits the mask assembly to be quickly removedfso that -it may -be 'steri- The imver endlof thecoupling member 53 is reduced in diameter, forming a .threaded end *60 and lana'nnular series of -bleed orifices 61 iIrrep1'UV'ided thereabove `to communicate with the interior ofthe anask. A'centrally apertmed @p63 is threadedeon the end 60 andV serves -to clamp thereagainst a fshort vlength of the 'rhbbertiibing 64, Vwhich iu the .present 'embodiment formsftheairway for supporting the tissuesrdf theoral cavity yto permit the passuge'lofrgas of widely. diifere't forms, materials, 65

It should'ibe noted 'that the element 64 may be r and'eonstructons within the broad idea of my inven- `"to the lungs of the patient.

tight Contact with the face of desired the member '29 may Y licker than the re-r mainder ofthe mask, and a Icoupling Ymember.

munication with ,the

disinfectant 'been shown tion, so long as it serves to support the tissues and thereby permit the passage of the gas.

In operation the airway 64 is introduced into the mouth of the patient and urged past the tongue and into the throat so as to permit passa'gle of gas to the lungs. At the same time t e mask 28 is adjusted to 'the face so that the cushion 29 makes substantially a gas 'tigl'itcoiitact therewith. As the mask and its airway are carried by the casing 10, manipulation of both may be guided by the hand of operator grasping the casing 1() in position to operate the lever 41.

After the mask and airway have been placed in position, the lever 41 is depressed andthe cam 44 engaging the head 36' will -force the stem 33 downwardand consequently move the valve 3() downwardly against- 'the action of the spring 37. Downward "movementoffthe 'valve 30 will move the facei'l below the v,flange 13 and permit gas intllechaln ber 14, from the gas supply pipe to 'pass through the Vflange 13 into the chamber 15, which being tapped at 16 will com'nl'unicate the supply pressure through the pipe 17' to .passesthrough the end 6() intotheairway 64, a portion of the supply v'being directed "through the aperturesv61 :into the interior of vthe face mask to permit either nasal ormouth breathing. e n

When the `lever 41 is released the spring 3T will retract the valve sothat the surface 31 seats against the ian'ge'13. VThis movement will remove the lower surface of the valve from :the boss 51 so that vthe gas heling expelled from `the lungs of the patient'may pass into the air chamber 19 and he exhausted vthrough theaperturcs Q0, which are in comatmosphere. At the `same time xthe passage it''is also in communication with the air chamber '.19 so ,that the bleed passages 48 Aand the tap 16 will release the-pressure on the indicating device 'convnected'to the .pipe 17 to `permit it -to return to 4the 'zero position.. lt should befnoted that this arrangement permits normal fbi-cathfthrough either nose vor mouth 'to `take lplace at any time when the lever 4.1 is relleased, as the communication with `the atmosphere through the apertures Q0 is thereby established. f

AWhile one embodiment of the 'invention rhas and describedr in great detail for the purposes of adequate disclosure, the in- "ventionfis not limited 'to anyof the details shown or described, but includes such-embodilli 'ot the operator and provided with a connection for a flexible tube from said apparat-us, said casing having rigidly connected thereto a face mask having an air Way adapted to extend beyond the patients oral tissues,

and a valve in said casingior controlling the passage ot gas to the mask and airway having a handle ca rried by the casing, said handle heilig movable directly toward the rface of the patient to open the gas supply whereby tightly against the hand of the the face of the patient when manipulating the valve to supply gas.

2. A face mask for use With resuscitation apparatus, comprising a concave element having a. facevlitting periphery adapted tov make substantially gas tightucontact with the face of a patient and to enclose the nose n and mout-h, an air Way passing through said element and adapted to pass beyond the oral tissues of the patient and hold themgapartv to permit the passage of gas tothe lungs of the patient, and means for introducing gas into said kmask outside ofsaid air Way.

3. A face mask for use with resuscitation apparatus, comprising a concave element having a face litting periphery adapted to make substantially gas tight contact with .y the face of a patient'andvsurrounding the nose and mouth, an air Way passing through said element and adapted to-pass beyond the oralY tissues of the patientv and hold them apart to permit the passage'of gas to the lungs ofthe patient, and a coupling mem ber through which said air Way passes for sealing it Where it passes through said mask,

, said coupling member beingprovided with ybleed orilices to permit gas to pass to the inside of said mask as well as to said air Way. i

4. A face mask for administering` gas to a patient, comprising in combination, a concave face shield having its periphery adapted to make substantially air tight contact With the face of the patient and surrounding the nose and mouth, and a tubulai' member located Within said periphery and extending therebeyond fordepressing and supporting thetissues of the Vmouth and throat of thepatient to permit passage of the gas to the lungs, and means to supply gas to both the shield Y and tubular member.

5. A face mask for usewith resuscitation apparatus, comprising. a concave element having a face fitting periphery adaptedv to make substantiallyk gas tight contact with the operator may hold the mask face of the patient and to enclose thenoSe-i-` yond thek oral tissues of the patient to hold themapart, an extension for said air way and mouth, an air way adapted to passbe-V ,y

6. A face mask lfor use with resuscitation apparatus, vcomprising a concave element having a face yfitting. periphery adapted to make substantially gas tight contact with the face of a patient and to enclose the nose and mouth, an airway adapted to pass beyond the oral tissues of the patient to hold them apart, anextension for said air Way passing through said elementV to permit the passage of gas from the lungs of the patient directly to the atmosphere, and means including said extension Yfor introducing gas directly into said mask.y

In testimony whereof We hereunto allix our signatures. r ROBERT B.' SWOPE. JOSEPH KREISELMAN. Y 

